Shalu Khandelwal

1- WebEx Calling (Transcription of Voice Messages Microservice) Client: Cisco

Duration: March 2021 to till date

Cisco WebEx Calling is a cloud based Microservice which has capability to send text, voice messages from one user to another user or group of users. This microservice will send transcription of voice messages to user’s via using Voicea which is an AI based STT engine .

Development Environment

Cloud Services – S3, EC2

Technology Used – Spring boot , Kafka , REST web services, Swagger 2.0, Docker

Tools Used – Eclipse, Postman, VSTS, Git , Kibana , Grafana

2- Cloud Connected UC (Migration of Onprem Certificate Management to Cloud)

Client: Cisco

Duration: Apr 2019 to till date

CCUC is an efficient, cloud-based managed services product for an on-premises Unified CM deployment. It provides a centralized cloud-based tool for analytics, upgrades, and troubleshooting. It allows customers to leverage the benefits of the Cisco WebEx cloud, while keeping critical calling workload on your premises. CCUC is a production ready solution developed from scratch and is used to show analytics, Ops Dashboard using Restful web services, web socket API’s. This is a cloud solution that receives telemetry data from a gateway and CCUC does the event processing and generate analytics for the data that requires special handling. Overall architecture of CCUC includes distributed logging, Microservices and supports scalability, data reliability and production stability.

Development Environment

Cloud Services – AWS Lambda, EC2 , SES , SQS o Technology Used - Python, Golang, Node js , REST web services, Swagger 2.0, Docker Tools Used – Eclipse, Postman, VSTS, Git

Database – MemSQL

Notification Tools – AWS SNS

Roles and Responsibilities

• Core member in the architecting and designing of the overall solution.
• Ownership of schema design, data modelling and overall development of restful web services used in notification engine.
• Explore and prototype different available technologies to evaluate the best fit for the solution o Integration with notification tools and AWS insight for distributed logging.
• Performance tuning to support increased load targets by doing code refactoring and rearchitecting certain services.

3. Cisco Unity Connection

Client: Cisco Systems

Duration: Jan 2018 to till date as Senior Technical Leader

Jul 2014 to Dec 2018 as Technical Leader

Feb 2011 to June 2014 as Senior Software Engineer

Cisco Unity Connection is a voice messaging platform based on Linux Operating System supports variety of integrations such as Jabber, REST API, Spark and Office 365. This product has quite large customer base and henceforth high escalation traffic. Roles and Responsibilities o Active involvement in delivery of feature enrich Unity Connection releases o Leading Security compliance of Unity connection which included FIPS / Fedramp audits o End to End feature ownership which includes client interaction, requirement gathering, estimation, design and development

Technology Stack: Java, Spring, Informix, Spring Transactions, Google Cloud – Gmail API, Pub/Sub, Python, VC++, C#, MFC, CentOs7.4 , Shell , C++ , Docker , HTML5

1. HSM device(Hardware security module) Integration

Environment: Windows 7, Visual Studio 6.0, Visual studio 2010

Front End: VC++ (MFC), VB 6.0, C#

Data Base: Sql Server 2008

Team Members: 3

Description: HSM (Hardware Security Module) is a hardware interface used for generating Random number, for storing secret keys provided by clients to encrypt Data, for different cryptographic algorithm (DES, DES3, AES, MD5, SHA) keys and finally for file encryption and decryption. HSM is required to integrate with the software’s used for GSM and Banking data generation.

Responsibilities

• Architecture design of HSM.
• Developed DLL (win32) in C++ to Provide HSM functionality with VB and C# application
• Developed DLL (win32 in C++ which encrypt and decrypt the files on disk with AES mechanism.
• Developed a User Interface for Clients so that they can enter their secret keys in HSM.
• Optimize the speed of HSM for Random number generation and encryption of data.